Britain is now in lockdown as we try to stop the spread of coronavirus Covid-19.
People can only leave the house to buy essential items, such as food, for exercise once a day and to help vulnerable people.
Prime Minister Boris Johnson's new rules will change everyone's lives for the foreseeable future - but how long exactly?
In his pre-recorded speech, Mr Johnson didn't give an exact date for when we would be able to return to normal.
The government website states: "These measures are effective immediately.
"The Government will look again at these measures in three weeks, and relax them if the evidence shows this is possible."
This means the current plan is to keep the rules in place for at least three weeks, with the possibility of extending them for even longer.
Italy, the worst hit country in Europe, has been in complete lockdown since March 9.
Tens of thousands of people have been charged for breaking the rules.
In the UK, people are now only allowed to leave their house for four reasons. They are:
- to buy essential items, such as food
- to do exercise, but only once a day. This can be a walk or a jog. You must do this alone or with people you live with
- to travel to work if it is absolutely necessary
- to care for a vulnerable person.
Johnson has described coronavirus Covid-19 as "the biggest threat this country has faced for decades".
He said: "All over the world we are seeing the devastating impact of this invisible killer.
"Without a huge national effort to halt the growth of this virus, there will come a moment when no health service in the world could possibly cope; because there won’t be enough ventilators, enough intensive care beds, enough doctors and nurses.
"And as we have seen elsewhere, in other countries that also have fantastic health care systems, that is the moment of real danger.
"To put it simply, if too many people become seriously unwell at one time, the NHS will be unable to handle it - meaning more people are likely to die, not just from Coronavirus but from other illnesses as well.
"So it’s vital to slow the spread of the disease."
